ImageGlass.frmMain.OpenFile C# (CSharp) Method

        private void OpenFile()
        {
            OpenFileDialog o = new OpenFileDialog();
            o.Filter = GlobalSetting.LangPack.Items["frmMain._OpenFileDialog"] + "|" +
                        GlobalSetting.SupportedExtensions;

            if (o.ShowDialog() == DialogResult.OK && File.Exists(o.FileName))
            {
                Prepare(o.FileName);
            }
            o.Dispose();
        }